Recording date-based schedules for a work unit Part

Recording date-based schedules for a work unit

This page allows you to enter the date-based schedules for the work unit associated with the part program. Tell me more.

Select the “Edit Date-based Schedule” link at the bottom of the “Edit Part Program Information” page.

The “Edit Date-based Schedule Information” page appears.

The system displays the following fields in the “Part Details” group box:

Part #	The number identifying the part for which the date-based schedule must be defined.
Part Description	The textual description of the part.
Maintenance Process	The maintenance process of the part, which could be “Hard-Time”, “On-Condition” or “Condition Monitoring”.
Program Status	The status of the part program, which could be “Fresh” or “Authorized”.
Revision #	The revision number of the part program.

Enter the following in the “Maintenance Activity Details” group box:

Work unit #

Use the drop-down list box to select the work unit for which the date-based schedule must be specified. The system lists all the work units except those with Program Item Type-Perpetual and As Required from the part maintenance program; prefixes work units with “TSK”, “SP” or “WP” based on the type of the work unit.

Note: The system will not display those work units for which the “Shelf life expiry” flag has been set to “Yes”.

Click the “Get Details” pushbutton to retrieve the date-based schedule details that are already defined for the work unit.

The system displays the following when you click the “Get Details” pushbutton:

Work Unit Description	The textual description of the task, standard procedure or component work package.
Maintenance Type	The type of the maintenance activity to be carried out, which could be “Overhaul”, “Repair”, “Inspection”, "Retire", ”Others” etc.,
Work Center #	The work center where the work unit has to be performed.
Work Center Description	The textual description of the work center.

Enter the following in the “Date-based Schedule Details” multiline:

Schedule Type	Use the drop-down list box to specify whether the work unit has to be performed on “Recurring” or “One-Time”. Mandatory. This field should be set as “One-Time”, if the “Maintenance Type” of the work unit is “Retire”. Mandatory when Remarks is provided regarding the maintenance program planned for the part.
Time Unit	Use the drop-down list box to specify the unit of measurement for the time, which could be “Days”, “Weeks”, “Months” or “Years”. Mandatory.
Threshold	The number of days, weeks, months or years after which, the schedule execution starts for the work unit that has to be performed (Decimal). Data entry in this field is mandatory if the “Schedule Type” is set as “One-Time”. Ensure that the number entered in this field is positive.
Interval	The interval in which the work unit has to be repeated (Decimal). Ensure that the number entered in this field is positive.
Alert Value	The value after which alert needs to be given on the impending work unit execution (Decimal). Ensure that the number entered in this field is positive.
Positive Tolerance	The upper limit within which the work unit is to be performed (Decimal). Ensure that the number entered in this field is positive.
Negative Tolerance	The lower limit within which the work unit is to be performed (Decimal). Ensure that the number entered in this field is positive.
Terminating Date	The date on or after which the maintenance requirement is terminated. In other words, the date on or after which maintenance activity need not be performed on the part (Date format). Ensure that the dates entered in the "Last Performed Date" and "Next Schedule Date" fields are earlier than the terminating date.
Terminating value (days)	The value after which the maintenance requirement terminates. In other words, the number of days after which the maintenance activity need not be performed on the part (Decimal). Ensure that the "Threshold Value" is less than the terminating value.
Update Basis	Use the drop-down list box to specify the basis of updating the work units of the part program. The system lists the following options: “Last Performed Date” – Select this option if you wish to update the work units on the date on which the work unit was last executed on the component. You must select this value, only if ‘Reset on Attachment’ is set as “Not Required” in the “Edit Part Program Information” page. “Installation Date” – Select this option if you wish to update the work units on the date on which the component was installed on the aircraft. You must select this value, only if ‘Reset on Attachment’ is set as “First Attachment” / “Every Attachment”. By default, the system sets this field to “Last Performed Date”, if ‘Reset on Attachment’ is set as “Not Required”.
Remarks	Any comments or supplementary information on the maintenance program planned for the part. Note: Clicking the icon launches the “View Notes” page.

Note: Ensure that at least one schedule detail is entered in the multiline.

If you have not entered the “Terminating Date” but have specified the “Terminating Value”, then the system calculates the terminating date by adding the terminating value to the “Manufacturing Date”. If the “Manufacturing Date” is also not entered, then the system adds the terminating value to the “Component Induction Date” to arrive at the “Terminating Date”.

Check the box in the ‘Select” column of the multiline, to mark the selected record for deletion.
Click the Delete icon in the toolbar above the multiline, to delete the selected record.
Click the “Edit Date Based Schedule” pushbutton to update the date-based schedule details.

If the Eng. doc reference # exists for the task, the system allows you to modify the following Eng. Doc. task schedule details in the Maintenance Program, only if the process parameter “Allow modification of Eng. Doc. task in Maintenance Program” is set as “Allowed” in the “Define Process Entities” activity of the “Common Master” business component.

Schedule Type
Update Basis
Date Based Schedule details

Note: You can update the schedule details for a task only if the maintenance operator associated with the task is also mapped to the login user, if the process parameter "Allow addition/modification of tasks from other Maint. Operator codes in Part Program?" under the 'Tech. Records Process Ctrl' entity type and 'Part Prog' entity is set as '0' for No in the Define Process Entities activity of Common Master.

Recording date-based schedules for a work unit – An overview

This page allows you to enter the date-based schedules for the work unit associated with the part program. Date-based schedules have their periodicity defined in terms of calendar days. The schedule for the next performance of the maintenance activity will be specified in terms of a calendar date.

Date-based schedules are employed for maintenance activities, which are to be performed irrespective of the asset usage. If the asset has a constant usage pattern the activities based on usage can be translated to date-based schedules. Routine maintenance based on date schedules has a higher degree of predictability, which inherently increases their planning efficiency.

The date-based schedules can be of the recurring (floating) or one-time type. In case of recurring schedule, the next due date is calculated from the date of execution of the previous schedule.

The threshold value specifies a date or value when the work unit execution should begin. The interval in which the work unit execution has to be repeated can also be specified. Alert value or date specifies the value or date after which the corresponding work unit is taken up in the component maintenance forecast.

You can also specify the positive and negative tolerance, which indicate the limits within which the work units are to be performed.

The system updates the date-based schedule details and stores the name of the currently logged in user and the current server date.

Note: You cannot define date-based schedules for a work unit, if the "Shelf Life expiry" field for that work unit is set to "Yes" in the "Edit Part Program Information" page.

What you can do in this page

Indicate the schedule type

The date-based schedule can be of the recurring (floating), or one-time type. In case of the “One-Time” type, the work package will be performed on a particular date. In case of the “Recurring” type, the work unit will be performed based on the time intervals. Also, the basis of updating the work unit execution can be of last performed date or installation date type.

Set the “Schedule Type” field as “Recurring” to indicate that the work package has to be performed in repeated intervals.
Set the “Schedule Type” field as “One-Time” to indicate that the work package has to be performed on a specified date.
Set the “Updation Basis” field as “Last Performed Date” to update the work unit by the date on which the work unit was last executed on the component.
Set the “Updation Basis” field as “Installation Date” to update the work unit by the date on which the component was installed on the aircraft.